package com.itheima.reggie.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.itheima.reggie.entity.Category;
import com.itheima.reggie.entity.Dish;
import com.itheima.reggie.entity.Setmeal;
import com.itheima.reggie.exception.DeletionNotAllowedException;
import com.itheima.reggie.mapper.CategoryMapper;
import com.itheima.reggie.service.CategoryService;
import com.itheima.reggie.service.DishService;
import com.itheima.reggie.service.SetmealService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

@Service
public class CategoryServiceImpl extends ServiceImpl<CategoryMapper, Category> implements CategoryService {
    @Autowired
    private DishService dishService;
    @Autowired
    private SetmealService setmealService;

    @Override
    public void deleteById(Long id) {
        int count1 = dishService.count(new LambdaQueryWrapper<Dish>().eq(id != null, Dish::getCategoryId, id));
        if (count1 > 0) {
            throw new DeletionNotAllowedException("此分类下关联了菜品，不允许删除");
        }

        int count2 = setmealService.count(new LambdaQueryWrapper<Setmeal>().eq(id != null, Setmeal::getCategoryId, id));
        if (count2 > 0) {
            throw new DeletionNotAllowedException("此分类下关联了套餐，不允许删除");
        }
        removeById(id);
    }
}
